this type of mounting is called a Belcher setting

constructed in such a way as to allow the gem to be worn East to West or North to South

This is a fantastic family piece to pass on as an heirloom for generations to come

Size 27 mm across

Accents:  2 Diamonds totaling

Mid Century Amethyst Cocktail Ring Multi colored this type of mounting isModernist. Bold. Classic. This ring could have graced the hand of a New York fashionista partying alongside Warhol, back in the day. We've set a new, incredibly deep colored, fine amethyst from Zambia in its swirling golden cage. Metal: 14K Yellow Gold Gem: Amethyst 17. 73 Carats Gem Measurements: 19. 4 mm, Round Ring Size: 5. 50 Marks: "14K" Stamped on the inside band